Trolley



(No Model.) I

W. WILLETT.

TROLLEY.

No. 586,647. Patented July 20,1897.

' amen/tot: qxli/bnaggw; 1

. I flew/M1 UNTTE STATES IVILLIAM IVILLETT, OF JOHNSTOIVN, PENNSYLVANIA.

TRO LLEY.

SPECIFICATION forming part of Letters Patent No. 586,647, dated July 20, 1897.

Application filed March 22,1897.

To ctZZ whom it may concern:

Be it known that I, WILLIAM WILLETT, a citizen of the United States, residing at J ohnstown, in the county of Cambria and State of Pennsylvania, have invented certain new and useful Improvements in Trolleys; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to trolleys; and the object is to provide means for reducing to a minimum the liability of the trolley-wheel jumping from the trolley-wires and which will also permit of the trolley rounding a curve or crossing a switch without the liability of losing contact with the trolley-wire.

IVith this object in view the invention consists of certain features of construction and combination of parts which will be hereinafter fully set forth and claimed.

In the accompanying drawings, Figure 1 is a front view of a portion of the roof of a car, showing the application of my invention thereto, the trolley-wheels being engaged with the trolley-wire; and Fig. 2 is a side view of the same.

In the drawings, 1 denotes the roof of the car, which is provided with the usual trolleypole platform or supporting-stand 2.

3 denotes the trolley-pole, the lower end of which is pivoted between parallel cars a, secured to the platform 2.

5 denotes springs secured to the platform and to the lower end of the trolley-pole. The energy of these springs is exerted to pull downwardly upon the trolley-pole.

6 denotes the harp, which is pivoted to the upper end of the trolley-pole to swing in a direction at right angles to the swinging motion of the trolley-pole.

'7 denotes two springs secured to the trolley-pole and connected to the harp. The energy of these springs is exerted to retain the harp in true alinement with the trolleypole or to permit the trolley to swing at an Serial No. 628,717. (No model.)

angle thereto in rounding curves or crossing switches. The harp consists of a base-plate 8, having diverging arms 9. Pivoted to the ends of these arms 9 and lying in a plane parallel thereto are two trolley-wheels 10, which are adapted to embrace or engage the trolley or conducting wire 11, the energy of the springs at the lower end of the trolleypole serving to hold these wheels into constant electrical contact with the trolley-wire.

In operation as the car is running on a straight track it is evident that the harp will be in true alinement with the trolley-pole and that the energy of the springs at the lower end of the trolley-pole will draw downwardly upon the pole and cause the trolleywheels to remain in contact with the trolleywire. O11 rounding a curve the tendency of the pole is to swing away from the trolleywire, and to overcome this I have hinged the harp to the upper end of the pole, thus permitting it to sway to one side and follow the wire. As soon as the curve is rounded and the car is on a straight track the springs at the hinge-joint will return the harp parallel with the pole.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

The combination with a trolley pole, springs, the energy of which is exerted to draw the pole downward, of a harp hinged to the upper end of the pole and having a movement at right angles to the movement of the pole, springs at the joint of the harp with the pole, and trolley-wheels arranged at obtuse angles to the pole and adapted to embrace and ride upon the upper side of the conducting or trolley wire, substantially as set forth.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

WILLIAM VVILLETT.

Witnesses:

RAYMOND 0. Emma, MARY OPPERMAN. 

